Exams / CLF-C02 / Global infrastructure / Question 1
CLF-C02 practice question: Global infrastructure (1 of 2)
Cloud Technology and Services A free question from our original CLF-C02 practice exam. Try it, then open the answer to see why each option is right or wrong.
A company serves videos and images from an Amazon S3 bucket in one AWS Region. Viewers on other continents complain about slow loading. The company wants copies of the content cached close to viewers around the world. Which service should it use?
Choose one answer.
- AA. Amazon CloudFront
- BB. AWS Direct Connect
- CC. Amazon EC2 Auto Scaling
- DD. AWS Site-to-Site VPN
Show the answer and explanation
Answer: A
- A. Right: Correct. CloudFront is a content delivery network that caches content at edge locations around the world, so viewers are served from a nearby location.
- B. Wrong: Direct Connect links a company's own network to AWS. It does not cache content for internet viewers.
- C. Wrong: Auto Scaling adds EC2 instances in one Region. It does not move content closer to distant viewers.
- D. Wrong: A Site-to-Site VPN encrypts traffic between a company's network and a VPC. It does not speed up delivery to the public.
Explanation
Edge locations are part of the AWS global infrastructure, separate from Regions and Availability Zones. Amazon CloudFront uses them to cache copies of content close to viewers and routes each request to the edge location with the lowest latency. The original content stays in the S3 bucket, which CloudFront uses as its origin.
Study
Keep practising
Answer questions with a score at the end, or practise just this topic with the explanation after each one. No sign-up needed.